Flexible thermoelectric nanogenerator based on the MoS<sub>2</sub>/graphene nanocomposite and its application for a self-powered temperature sensor

Xie, Yannan; Chou, Ting-Mao; Yang, Weifeng; He, Mengchang; Zhao, Yingru; Li, Ning; Lin, Zong‐Hong

doi:10.1088/1361-6641/aa62f2

Cited by 59 publications

(34 citation statements)

References 21 publications

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“…However, the Seebeck coeﬃcient and thermal conductivity of graphene are ≈40 to180 μV K −1 at ≈250 to 300 K, ≈2000 to 5000 W m −1 K −1 at 300 K. Such a high thermal conductivity and relatively low Seebeck coeﬃcient are hindered its application as a thermoelectric material, but it can be used as additive to other thermoelectric materials to improve the thermoelectric performance according to pervious work. For instance, Xie et al [ 51 ] fabricated the miniaturized flexible thermoelectric nanogenerator based on the MoS 2 /graphene nanocomposite. Particularly, the addition of graphene as a charge transfer channel improved the conductivity of the electrode material so that the nanocomposite thermoelectric nanogenerator displayed higher thermoelectric performance.…”

Section: Graphene‐based Materials For Mehdsmentioning

confidence: 99%

Graphene Materials for Miniaturized Energy Harvest and Storage Devices

Wang

Zhang

et al. 2021

Small Structures

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The development of miniature energy harvesting and storage devices with considerable performance is urgently needed for the increasing demand of diverse electronics that require portable and wearable functions. With a unique 2D structure, graphene material possesses numerous fascinating physical and chemical properties which endow it as promising candidate component or building block to boost such miniature devices system with superior performance and multifunctionality, including but not limited to active material, flexible substrate, and electrically conductive additive. In this review, the recent advances of graphene‐based materials for miniature energy harvesting and storage devices are summarized, including solar cells, mechanical energy harvesters, moisture and liquid flow generators, batteries and electrochemical capacitors, and their integrated devices. The design strategies of active electrodes and devices in performance improvement and functions are specially emphasized. Finally, the challenges and future directions of graphene materials in microdevices are also provided.

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Section: Graphene‐based Materials For Mehdsmentioning

confidence: 99%

Graphene Materials for Miniaturized Energy Harvest and Storage Devices

Wang

Zhang

et al. 2021

Small Structures

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“…However, due to the dangling bonds and lattice mismatch, it is difficult for the traditional materials to achieve atomically flat heterostructure interfaces, which limits the development of nanoscale PN heterostructures [ 1 , 2 , 3 ]. Two-dimensional (2D) layered materials have attracted widespread attention due to their novel and unique electronic and optical properties [ 4 , 5 ]. The discovery of graphene and transition metal dichalcogenide (TMD) materials has brought new opportunities for the development of PN junction components [ 6 ].…”

Section: Introductionmentioning

confidence: 99%

Synthesis and Spectral Characteristics Investigation of the 2D-2D vdWs Heterostructure Materials

Han

Liu

Wang

et al. 2021

IJMS

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Due to the attractive optical and electrical properties, van der Waals (vdWs) heterostructures constructed from the different two-dimensional materials have received widespread attention. Here, MoS2/h-BN, MoS2/graphene, WS2/h-BN, and WS2/graphene vdWs heterostructures are successfully prepared by the CVD and wet transfer methods. The distribution, Raman and photoluminescence (PL) spectra of the above prepared heterostructure samples can be respectively observed and tested by optical microscopy and Raman spectrometry, which can be used to study their growth mechanisms and optical properties. Meanwhile, the uniformity and composition distribution of heterostructure films can also be analyzed by the Raman and PL spectra. The internal mechanism of Raman and PL spectral changes can be explained by comparing and analyzing the PL and Raman spectra of the junction and non-junction regions between 2D-2D vdWs heterostructure materials, and the effect of laser power on the optical properties of heterostructure materials can also be analyzed. These heterostructure materials exhibit novel and unique optical characteristics at the stacking or junction, which can provide a reliable experimental basis for the preparation of suitable TMDs heterostructure materials with excellent performance.

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“…The structure of 2D transition metal dichalcogenide (TMDs) materials is similar to that of graphene, and its band gap width changes with the layer number and thickness [11,12]. The TMDs and graphene materials with complementary advantages are superimposed together, which can promote the application of graphene and TMDs materials in the photoelectric detection field [13][14][15]. The high mobility of graphene can ensure the rapid response of device, and the Van Hof singularity in electronic state density of TMDs materials ensures the strong interaction between light and materials, which can effectively enhance the absorption of light and the generation of electron-hole pairs [16,17].…”

Section: Introductionmentioning

confidence: 99%

Research on the Preparation and Spectral Characteristics of Graphene/TMDs Hetero-structures

et al. 2020

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The Van der Waals (vdWs) hetero-structures consist of two-dimensional materials have received extensive attention, which is due to its attractive electrical and optoelectronic properties. In this paper, the high-quality large-size graphene film was first prepared by the chemical vapor deposition (CVD) method; then, graphene film was transferred to SiO2/Si substrate; next, the graphene/WS2 and graphene/MoS2 hetero-structures were prepared by the atmospheric pressure chemical vapor deposition method, which can be achieved by directly growing WS2 and MoS2 material on graphene/SiO2/Si substrate. Finally, the test characterization of graphene/TMDs hetero-structures was performed by AFM, SEM, EDX, Raman and PL spectroscopy to obtain and grasp the morphology and luminescence laws. The test results show that graphene/TMDs vdWs hetero-structures have the very excellent film quality and spectral characteristics. There is the built-in electric field at the interface of graphene/TMDs heterojunction, which can lead to the effective separation of photo-generated electron–hole pairs. Monolayer WS2 and MoS2 material have the strong broadband absorption capabilities, the photo-generated electrons from WS2 can transfer to the underlying p-type graphene when graphene/WS2 hetero-structures material is exposed to the light, and the remaining holes can induced the light gate effect, which is contrast to the ordinary semiconductor photoconductors. The research on spectral characteristics of graphene/TMDs hetero-structures can pave the way for the application of novel optoelectronic devices.

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Flexible thermoelectric nanogenerator based on the MoS₂/graphene nanocomposite and its application for a self-powered temperature sensor

Cited by 59 publications

References 21 publications

Graphene Materials for Miniaturized Energy Harvest and Storage Devices

Graphene Materials for Miniaturized Energy Harvest and Storage Devices

Synthesis and Spectral Characteristics Investigation of the 2D-2D vdWs Heterostructure Materials

Research on the Preparation and Spectral Characteristics of Graphene/TMDs Hetero-structures

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Flexible thermoelectric nanogenerator based on the MoS2/graphene nanocomposite and its application for a self-powered temperature sensor

Cited by 59 publications

References 21 publications

Graphene Materials for Miniaturized Energy Harvest and Storage Devices

Graphene Materials for Miniaturized Energy Harvest and Storage Devices

Synthesis and Spectral Characteristics Investigation of the 2D-2D vdWs Heterostructure Materials

Research on the Preparation and Spectral Characteristics of Graphene/TMDs Hetero-structures

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Flexible thermoelectric nanogenerator based on the MoS₂/graphene nanocomposite and its application for a self-powered temperature sensor